CN106903172B - It is a kind of to realize steel plate in the control method of rolling different zones position tracking switching - Google Patents
It is a kind of to realize steel plate in the control method of rolling different zones position tracking switching Download PDFInfo
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- CN106903172B CN106903172B CN201510977132.4A CN201510977132A CN106903172B CN 106903172 B CN106903172 B CN 106903172B CN 201510977132 A CN201510977132 A CN 201510977132A CN 106903172 B CN106903172 B CN 106903172B
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- steel plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2273/00—Path parameters
- B21B2273/20—Track of product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Realize steel plate in the control method of rolling different zones position tracking switching the present invention relates to a kind of, a kind of new position tracking switch control logic of the design of control method, after detecting position of the steel plate on roller-way, automatic amendment steel plate position tracking, and determine milling train outlet output at the time of trigger signal meet host computer time trigger control logic after, time trigger signal is just sent to host computer, it can be effectively ensured and track correctness in rolling line different zones steel plate position, avoiding tracking because of steel plate position malfunctioning causes Various types of data etc. in steel plate rolling production process abnormal, to solve in the actual production of steel plate, easily cause the error of rolled plate information, the problem of causing steel scrap accident to occur.
Description
Technical field
The present invention relates to Wide and Thick Slab steel rolling region technical field of automatic control, especially a kind of realization steel plate is being rolled not
With the control method of region position tracking switching.
Background technique
About 300 meters of Baosteel Heavy Plate Mill's rolling line overall length, including steel plate de-scaling, 4 roller roughing mills (edger roll), 4 roller finishing mills, pre-
Straightener, cooling, the thermal straightening machine composition of acceleration etc..Position tracking accuracy for the ease of steel plate in rolling line region, by rolling line
It is divided into multiple groups roller-way, the transmission of every group of roller-way is driven by variable-frequency motor.
Steel plate position tracking in rolling line region is that logical operation control is realized by PLC.Specific steel plate tracing positional be by
Select corresponding group of roller table speed integral to realize, meanwhile, the steel of rolling line different zones is distinguished using different steel plate BID
Plate.
But in actual production, " trigger signal is always at the time of milling train outlet P1 point feeds back to host computer for appearance often
Zero, cause the rear computation model of host computer inactive, causing steel plate, cold actual achievement such as does not upload at the data exceptions eventually.It can cause rolled steel
The error of plate information, causes steel scrap accident to occur.
Existing steel plate position trace logic automatically controls in logic in PLC, milling train outlet P1 point feeds back to host computer
At the time of trigger signal there are following control logics:
1) cooling tracking sequence is opened
2) milling train final pass signal=2
3) P1 point temperature (milling train outlet temperature) is greater than 610 degree of signal rising edges
4) steel plate cooled region actual speed is greater than zero
Must above 4 on-site signals, while milling train outlet P1 point trigger signal can just feed back to host computer when meeting.
However, in actual production, rolled plate is actually reached milling train outlet P1 point, it is real that steel plate cooled region occurs often
The case where border speed is not more than zero, occurs, and eventually leads to milling train outlet P1 point trigger signal error.And the reality of steel plate cooled region
Border speed is with " steel plate tracing positional selects corresponding roller table speed " Lai Shixian, and steel plate cooled region actual speed is not more than
Zero, it is related with the tracking switching of milling train trunk PLC steel plate position.
Summary of the invention
The object of the present invention is to provide a kind of control methods realizing steel plate and switching in rolling different zones position tracking, originally
The control method of invention, which can be effectively ensured, tracks correctness in rolling line different zones steel plate position, avoids tracking because of steel plate position
Error causes the exception such as Various types of data in steel plate rolling production process, easily causes in the actual production of steel plate to solve
The problem of rolled plate information malfunctions, and steel scrap accident is caused to occur.
To achieve the above object, the scheme of the invention is: a kind of realization steel plate is in rolling different zones position tracking switching
Control method, the control method includes the following steps:
(1) host computer sets steel plate parameter information, divides rolling line steel plate position tracing area, it may be assumed that rolling region, cooling zone
Domain and thermal straightening region；
(2) PLC reads the steel plate parameter information, calculates the speed of service of steel plate, and be converted into the corresponding roller of steel plate
Road setting speed is handed down to roller-way frequency converter；
(3) after the completion of heating furnace tapping, if rolling line detector detects steel plate head, start steel plate position tracking function
Energy；
(4) PLC reads the actual speed for the roller-way frequency converter feedback organized where steel plate, calculates when front spring is on roller-way
Position；
(5) PLC reads the steel plate position that field position detector detects, and the steel plate position being calculated with step (4)
It sets and is compared, it is automatic to correct steel plate position tracking；
(6) rolling line steel plate is switched in different location tracing area, when the previous piece of steel plate head position that rolling is completed is big
In being equal to position apart from mill housing center line 106.3m, and rolls current block steel plate head position and be more than or equal to apart from milling train
When the position of memorial archway center line 19.2m, the tracking of rolling line steel plate position is switched to rolling region；
(7) milling train exports sending instant trigger signal, if trigger signal meets time trigger control at the time of milling train exports
Logic processed, then for trigger signal feedback to host computer, host computer starts computation model after the cooling information of steel plate at the time of will be described, and
Automatically switch to enter next piece of rolled plate position tracking.
It is according to the present invention to realize steel plate in the control method of rolling different zones position tracking switching, the step
Suddenly in (1), the steel plate parameter information includes the specification of steel grade and steel plate.
It is according to the present invention to realize steel plate in the control method of rolling different zones position tracking switching, the step
Suddenly in (2), PLC calculates steel plate heating curves, and basis steel sheet heating curves calculates steel plate according to the specification of steel grade and steel plate
The speed of service.
It is according to the present invention to realize steel plate in the control method of rolling different zones position tracking switching, the step
Suddenly in (4), the calculating is when position of the front spring on roller-way includes:
(1) according to the speed feedback value and roller diameter parameter of roller-way group where steel plate, steel plate head position is calculated；
(2) calculated steel plate head position is added with steel plate length, obtains steel plate tail position on roller-way.
It is according to the present invention to realize steel plate in the control method of rolling different zones position tracking switching, the step
Suddenly in (5), automatic amendment steel plate position tracking includes:
(1) calculated steel plate position is compared with the position that the position detector that field is arranged detects；
(2) steel plate position amendment window is defined, steel plate position is modified.
It is according to the present invention to realize steel plate in the control method of rolling different zones position tracking switching, the step
Suddenly in (7), the time trigger control logic are as follows:
(1) the cooling tracking sequence of steel plate is opened；
(2) rolled plate is in final pass；
(3) milling train outlet temperature is greater than 610 degree of signal rising edge signals；
(4) rolling region roller-way actual speed is greater than zero.
It is that the present invention reaches the utility model has the advantages that, by live actual tracking, effect is bright after using control method of the invention
Aobvious, avoid trigger signal at the time of milling train outlet P1 point feeds back to host computer is zero always, leads to the rear calculating mould of host computer
Type is inactive, and causing steel plate, cold actual achievement the data exceptions such as does not upload and occurs eventually, and the new steel plate position tracking that the present invention designs is cut
Control logic is changed, is applicable in rolling line steel plate position tracking similar in all kinds of steel rolling mills, it is ensured that the correctness of Steel Plate Information.
Detailed description of the invention
Fig. 1 is that rolling line steel plate position tracing area divides schematic diagram；
Fig. 2 is the flow chart of control method of the present invention.
Specific embodiment
The present invention is described in further detail with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, steel plate position tracking division in rolling line partial region is as follows:
Region definition: as shown in Figure 1, dividing 3 with mill housing center line, the outlet of steel plate cooled region for line of demarcation
Steel plate position tracing area.Wherein, a-quadrant is defined as before inlet of rolling mill, milling train is exported to definition before the outlet of steel plate cooled region
For B area, steel plate cooled region is defined as the region C behind outlet.
Rolling mill practice: after steel plate 1 is by mill milling, the process after rollgang is transported to, i.e. de-distortion, steel plate are cold
But, the process links processing such as strong, shearing of heat, steel plate 2 are the next piece of milling train object to be rolled, and so on.
(8) tracking switching: to steel plate tracking switch logic analysis, when heat rectification machine instead rectifys " steel plate 1 ", and the tail of " steel plate 1 "
When " position 2 " is crossed in portion, mill milling " steel plate 2 " passage to the end, " position 1 " is not arrived on " steel plate 2 " head at this time, and is actually reached
Milling train exports P1 point.If it is strong region " steel plate 1 " that milling train steel plate position tracking this moment automatically switches to heat, " steel plate cooled region
Actual speed " be not more than zero, i.e., actual speed be negative value or zero, the rear computation model of host computer will be caused not open in this way
Dynamic, causing steel plate, cold actual achievement the data exceptions such as does not upload and occurs eventually.Here " position 1 " and " position 2 " be in technique arrange with
De-scaling box is the relative physical location of starting point, and " position 1 " apart from mill housing center line 19.2m, " position 2 " is apart from mill housing
Center line 106.3m.
In order to solve the above technical problems, the present invention provides the control methods of new steel plate regional location tracking switching, such as
Shown in Fig. 2, control method process of the present invention is as follows:
(1) rolling line steel plate position tracing area rolling region (a-quadrant), cooled region (B area) and heat is divided into rectify
Straight region (region C), sets steel plate parameter information on host computer, the steel plate parameter information include steel plate steel grade and
The specification of steel plate；
(2) host computer issues steel plate parameter information, reads the steel plate parameter information by PLC, PLC according to steel grade and
The specification of steel plate calculates steel plate heating curves, and basis steel sheet heating curves calculates the speed of service of steel plate, and will be calculated
The steel plate speed of service be converted into the corresponding roller-way setting speed of steel plate, be handed down to roller-way frequency converter, rolling line roller-way is by frequency conversion
It is motor-driven；
(3) after the completion of heating furnace tapping, if rolling line detector detects steel plate head information, start steel plate position tracking
Function；
(4) PLC reads the roller-way actual speed for the roller-way frequency converter feedback organized where steel plate, according to roller-way actual speed and
Roller diameter parameter calculates and works as head position of the front spring on roller-way, then by calculated steel plate head position and steel plate length
It is added, steel plate tail position on roller-way is obtained, so that the position when front spring on roller-way be calculated.
(5) PLC reads the steel plate position that field position detector detects, and the steel plate position being calculated with step (4)
It sets and is compared, it is automatic to correct steel plate position tracking；
(6) rolling line steel plate is switched in different location tracing area, and when previous piece of steel plate head position of rolling completion
More than or equal to " position 2 ", when rolling current block steel plate head position more than or equal to " position 1 ", the tracking switching of rolling line steel plate position
To rolling region；
(7) milling train exports sending instant trigger signal, if trigger signal meets time trigger control at the time of milling train exports
Logic processed, then for trigger signal feedback to host computer, host computer starts computation model after the cooling information of steel plate at the time of will be described, and
Automatically switch to enter next piece of rolled plate position tracking, control logic is triggered at the time of described and needs while meeting milling train outlet
The four time trigger signals sent, it may be assumed that
A. the cooling tracking sequence of steel plate is opened；
B. rolled plate is in final pass；
C. milling train outlet temperature is greater than 610 degree of signal rising edge signals；
D. rolling region roller-way actual speed is greater than zero.
The new steel plate position tracking switch control logic that the present invention designs, is applicable to similar in all kinds of steel rolling mills roll
In the tracking of line steel plate position, it is ensured that the correctness of Steel Plate Information.
After control method of the invention, by live actual tracking, effect is obvious, and it is anti-to avoid milling train outlet P1 point
Feed host computer at the time of trigger signal be always zero, cause the rear computation model of host computer inactive, cause steel plate cold reality eventually
Achievement the data exceptions such as does not upload and occurs.
Claims (5)
1. a kind of realize steel plate in the control method of rolling different zones position tracking switching, the control method includes as follows
Step:
(1) host computer set steel plate parameter information, divide rolling line steel plate position tracing area, it may be assumed that rolling region, cooled region and
Thermal straightening region；
(2) PLC reads the steel plate parameter information, calculates the speed of service of steel plate, and be converted into the corresponding roller-way of steel plate and set
Constant speed degree is handed down to roller-way frequency converter；
(3) after the completion of heating furnace tapping, if rolling line detector detects steel plate head, start steel plate position following function；
(4) PLC reads the actual speed for the roller-way frequency converter feedback organized where steel plate, calculates and works as position of the front spring on roller-way
It sets；
(5) PLC reads the steel plate position that detects of field position detector, and the steel plate position being calculated with step (4) into
Row compares, automatic to correct steel plate position tracking；
(6) to rolling line steel plate different location tracing area switch, when rolling complete previous piece of steel plate head position be greater than etc.
In the position apart from mill housing center line 106.3m, and rolls current block steel plate head position and be more than or equal to apart from mill housing
When the position of center line 19.2m, the tracking of rolling line steel plate position is switched to rolling region；
(7) milling train export sending instant trigger signal, if milling train export at the time of trigger signal meet time trigger control patrol
Volume, then for trigger signal feedback to host computer, host computer starts computation model after the cooling information of steel plate, and automatic at the time of will be described
Switch into next piece of rolled plate position tracking；
The time trigger control logic are as follows:
(1) the cooling tracking sequence of steel plate is opened；
(2) rolled plate final pass；
(3) milling train outlet temperature is greater than 610 degree of signal rising edge signals；
(4) rolling region roller-way actual speed is greater than zero.
2. according to claim 1 realize steel plate in the control method of rolling different zones position tracking switching, feature
It is, in the step (1), the steel plate parameter information includes the specification of steel grade and steel plate.
3. according to claim 2 realize steel plate in the control method of rolling different zones position tracking switching, feature
It is, in the step (2), PLC calculates steel plate heating curves, and basis steel sheet heats according to the specification of steel grade and steel plate
The speed of service of curve calculating steel plate.
4. according to claim 1 realize steel plate in the control method of rolling different zones position tracking switching, feature
It is, in the step (4), the calculating is when position of the front spring on roller-way includes:
(1) according to the speed feedback value and roller diameter parameter of roller-way group where steel plate, steel plate head position is calculated；
(2) calculated steel plate head position is added with steel plate length, obtains steel plate tail position on roller-way.
5. according to claim 1 realize steel plate in the control method of rolling different zones position tracking switching, feature
It is, in the step (5), automatic amendment steel plate position tracking includes:
(1) calculated steel plate position is compared with the position that the position detector of site layout project detects；
(2) steel plate position amendment window is defined, steel plate position is modified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510977132.4A CN106903172B (en) | 2015-12-22 | 2015-12-22 | It is a kind of to realize steel plate in the control method of rolling different zones position tracking switching |
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|---|---|---|---|
| CN201510977132.4A CN106903172B (en) | 2015-12-22 | 2015-12-22 | It is a kind of to realize steel plate in the control method of rolling different zones position tracking switching |
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| CN106903172A CN106903172A (en) | 2017-06-30 |
| CN106903172B true CN106903172B (en) | 2019-03-29 |
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